You Are Reading About a Garden Designer Who Has Invented

You are reading about a garden designer who has invented something called the "megagarden space" in which a few specimens are planted in a disturbed area and allowed to make a garden by self-propagation.Why might this designer choose to work with angiosperms rather than gymnosperms?

A) Angiosperms can produce flowers and fruits to aid in seed dispersal.
B) Angiosperms produce pollen and do not require water to reproduce.
C) Angiosperms have alternation of generations.
D) Angiosperms have a vascular system, which allows them to grow taller.
E) Angiosperms can produce spores, which are more stable than seeds from gymnosperms.